• 专利标题:   Dry process for forming prelithiated electrode for useful in e.g. lithium-ion secondary, involves mixing lithium metal powder and polymer binder and rheology modifier, and drying obtained composition.
  • 专利号:   WO2022216460-A1, US2022328799-A1
  • 发明人:   XIA J, FITCH K B, YAKOVLEVA M, BLACK R N
  • 专利权人:   FMC LITHIUM USA CORP, LIVENT USA CORP
  • 国际专利分类:   H01M010/0525, H01M004/02, H01M004/04, H01M004/1391, H01M004/1393, H01M004/1395, H01M004/1397, H01M004/38, H01M004/62, H01M004/134, H01M004/583
  • 专利详细信息:   WO2022216460-A1 13 Oct 2022 H01M-004/04 202286 Pages: 41 English
  • 申请详细信息:   WO2022216460-A1 WOUS021676 24 Mar 2022
  • 优先权号:   US172274P, US273287P, US702154

▎ 摘  要

NOVELTY - The process involves preparing a dry electrode material mixture comprising an active component comprising an active electrode material, a polymer binder and a conductive material mixed with a prelithiation printable lithium composition, where the composition comprises a lithium metal powder i.e. stabilized lithium metal powder, a polymer binder compatible with the lithium metal powder, and a rheology modifier e.g. conductive material such as carbon black, carbon nanotubes, and graphene, compatible with the lithium metal powder to form a dry electrode material mixture. The dry electrode material mixture is deposited to a substrate as a non self- supported layer or interface to form a prelithiated electrode. The lithium metal powder and polymer binder and rheology modifier are mixed, and the obtained composition is dried. USE - Dry process for forming a prelithiated electrode for useful in a battery (all claimed) e.g. lithium-ion secondary or rechargeable batteries in applications. Uses include but are not limited to cellular phones, camcorders, laptop computers, and larger power applications such as electric vehicles and hybrid electric vehicles. ADVANTAGE - The process forms electrodes in a single processing step and provides dry processes for forming electrodes, so that the use of solvents is essentially or substantially eliminated. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: a prelithiated electrode comprising an electrode substrate and a dry electrode material mixture applied to the electrode substrate as a layer or interface; and a battery comprising a prelithiated electrode. DESCRIPTION OF DRAWING(S) - The drawing shows a graph representing a plot comparing differential capacity (dQ/dV) versus potential (V) during first charge between baseline and cells with a printable lithium composition.